herbs that act upon and support the nervous system are often used as mild stimulants for chronic fatigue, stress, or depression. They can act as stimulants, or have a calming effect, often dependent on the dosage given. Many of the these nervines contain volatile essential oils. Nervine herbs do not have the extreme side effects that pharmaceuticals do.
Certain essential oils have the ability to assist in promoting menstruation (menses) and regulating the monthly discharge, but although these oils are very helpful in treating problems of this nature, some of them should be avoided in pregnancy.
diuretics draw excess fluids out of the tissues and back into the blood. That blood then travels to the kidneys, which extract the excess fluid and eliminate it from the body through the urine. Fennel, juniper and patchouli are all diuretic essential oils.